Injection machine for recycled plastic injection molding system

An injection machine for a recycled plastic injection molding system used with at least one molding device to produce an end product from plastic, the injection machine comprising:

• a supplying system disposed on an upstream of a receiving route of the injection machine, the supplying system having a first material drive device without having heating elements and configured to drive the plastic in a non-molten state from an entry end to a downstream of a receiving route of the supplying system;
• a heating system disposed on the downstream of the receiving route of the supplying system, the heating system having a second material drive device and a heating device, the first material drive device extends to the heating system, the heating device is configured to heat and transform the plastic from the non-molten state to a molten state, the second material drive device being configured to drive the plastic to a downstream of a receiving route of the heating system;
• a buffer system disposed on the downstream of the receiving route of the heating system, the buffer system having a piston and a cylinder coupled to the second material drive device;
• and
• a pressure holding system disposed on a downstream of a receiving route of the buffer system, the pressure holding system having a pressure holding device, the pressure holding device configured to provide the molding device with a pressure, wherein:
• the first material drive device has a first driver and a feed screw,
• the second material drive device has a second driver and a heating screw,
• the feed screw and the heating screw are configured to be at a distance from each other, the distance ranging between 20-40 mm,
• the buffer system is configured to have a receiving state and a supplying state,
• the buffer system is configured to receive the plastic from the heating system and push the piston to a receiving position when the buffer system is at the receiving state,
• the buffer system is configured to drive the plastic in the molten state to the downstream of the receiving route of the injection machine when the buffer system is at the supplying state;
• and
• a switch valve disposed between the heating system and the buffer system and configured to selectively trigger the receiving state and the supplying state of the buffer system, wherein:
• the buffer system is switched to the receiving state when the switch valve is at an open state, and
• the buffer system is switched to the supplying state when the switch valve is at a closed state.